I guess more what I meant when I thought of that (This isn't being discussed, more my own random thinking on the spot) is having an ID that is akin to a Freelancer ID, but allows docking on Wild bases (and no dock but not red to Nomads), but HEAVILY nerfed (Can't use anything higher than a LF, can't engage unless in self-defense, etc). Something to allow RP'ing an infected without being shot at by Wild/Noms. Idk, could be a horrible ID since it's not really thought out.
As Werd mentioned along with others (and I touched on this too), you don't need to shoot things to play an infected, and to really act as a spy/infiltrator would mean you don't reveal at all that you're associated with Noms, thus you could still be "red" to them and can't dock on their bases to keep up appearances.